Improvement in attachable and removable calks for horseshoes



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i Letters Patent No.` `97,7 98,

dated December 14,1869.

IMPROVEMENT IN ATTACHABLE AND REMOVABLE CALKSFOR HoRsEsHoEs.

. The Schedule referred to :in these Letters Patent and making part of the same.

To all whom it may concern:

. Be it knownthat I, G. S. Nonms, ofthe` city of Baltimore, in the State of Maryland have invented certain new and 4useful Improvements in Attachable andfltemovable Calksfor Horseshoes; and I do hereby declare the following to .be a full, clear, and exact description of the construction and operation of the same, reference being had to `the accompanying drawings, makin g a part o t'this specication, in which-.-

Figure 1 represents, in perspective, a horseshoe,

- wit-h the calk in question partially attached; one of the nails'being o1nitted, to show the crease in the shoe, which, intliis plan, it partially occupies.

Figure 2represents a vertical section through the shoe, calk, and hoof of a horse,

Figure 3 represents a' similar section of a slight modification of the attachment shown in fig. f

` Figure 4 represents the calk in perspective, and as detached from the shoe. y

Similar letters of' reference, where they occur lin theV separate iigu'res, denote like parts' in all. of the drawy ings. y

My invention consists in the devices for attaching a l call( to a shoe, as will be hereinafterdescribed, and, as `a consequence of the manner ot' attaching the oalk, `-removing it, without removing the shoe, when it is desirable todo so.

'lo enable others skilled in the art to make and use my invention, I will proceed todescribe. the salue with reference to the drawings.`

l If the liorseslfoe is previously prepared for the re.

`ception of the calk, when at any time it'should become desirable to use `or apply it, the shoe A, as 'in iig.`1, may have two creases c afori-ned in its upper side,- and so made, may be nailed to the hoot' in the ordinaryv manner. p

The calkB is made, as shown in the drawings, b

lheilig the edged or tread-portion that rests upon the` ground; (',the bearing-portion p that restsl against the under side' of the shoe; and d is a shield, which serves p the purpose oi' the ordinary rise or elevation on a horseshoe, to prevent the horse from driving the shoe backward.

to the shoe and foot of If. the shoe `has not been previouslyicreased or grooved for the reception of theyna-ils before it was fastened to the hoof, then a slight modification of the mode of fasteningmay be necessary, as follow-s:

Instead of vrectangular holes through the calk, as at g, I can make them round or half round, as at i, ig.4, and with a gimlet or other boringtool,-make corresponding openings through the lower edge of the hoof, or between the hoot and the shoe, for the reception of the nails, which, when'clinched against `the inner edge of the shoe, as firmly holds the calk to the shoe or hoof of the horse. So that a oalk with rectangular, round, or half-round holes, and nails made to t them, may be united to an ordinary unprepared or uncreased shoe, without removing thevsh'oe from the foot of the animal.

A reverse operation admit; of the removal of the calk, when necessary, without disturbing the shoe.

When the creased shoe is used, it atfords a better bearing for the nails in the metal ofthe shoe, and ordinary horseshoe-nails will answer; but when there are no creases, and the nails' are entirely supported in the hoot' of the animal, then a more rounded and substantial nail is required, more particularly of that portion in contact with the hoof.

'lhe holes in ithe calks, in-both cases, are better of rectangular form, for strength, andinay be driven through without' the previously-made hole.

lIn applying this calk` to the shoe, one or two thin pieces of rubber should be interposed to prevent hammering and jar. This is the more important when the calks are applied to shoes that are somewhat worn, as by interposing the rubber in one, two, or three, or

more layers, the calk can bebetter tted to the shoe,`

without the necessity of making so many sizes of calks, whilst the union between the calk and` shoe is thus firm enough, and at the same time elastic or yielding. i 1 Having thus fully described my invention,

What I claim therein as new, and de'sire to secure by Letters Patent, isp i An attachable and detachable calk, secured to the shoe by the catch-piece eand theclinch-nails ff, with or wit-hout the creases in the shoe, substantially' as and for the purpose described.

i G. S. NORRIS.

Witnesses R. Norms, Jr., A. B. DAVIDSON. 

